I had never tried curry and noodles together before. It makes a good combination I think, as long as it's not a strong flavour. If you don't like udon noodles, I'd suggest you could try with spaghetti or tagliatelle instead. But remove the curry paste, add instead pomodori pelati in scatolachopped canned tomatoes and a bit of peperoncino, hot chilly pepper. It becomes more mediterranean and less asiatic.

Put the raw king prawns, the red pepper cut into small squares and the chopped onion in a small container and leave it to marinate for about 2 hours with the curry paste, lemon juice, soy sauce and parsley. Cover and rest in the fridge until needed. Take a big pan such as a wok, heat the vegetable oil and pour the udon noodles and the marinated ingredients in the pan all together. Sti fry until the onion and the red pepper are cooked but still crispy. 5 to 8 minutes should be enough. Garnish with more parsley if you like and serve immediately.